the changesets basic data could be broadcast in an irc channel with a special syntax to describe what area is affected, what the contents are, what conflicts occur and a link to the data. this could be subscribed by simple filtering on the channel.

Voting

you could post the basic data about an osm changeset using a short bounding box the basic data in it and a link to the data in twitter and then aggregate the data. this could use a geohash or something similar to easily select the area.